AI Article Synopsis
- Studied how to create passive Bessel-Gauss beams using an axicon with a specially designed Gaussian resonator and measured the output from a Nd:YAG laser.
- Measured key properties of the beams such as output energy (58 mJ) and Rayleigh range (229.3 mm) for a 1° axicon, comparing them to the Gaussian mode results.
- Explored the effects of changing axicon apex angles and beam spot sizes on the properties of the generated Bessel-Gauss beams through both theoretical analysis and experiments.
Article Abstract
We studied the conditions for generating passive Bessel-Gauss beams by using an axicon. We designed an appropriate Gaussian resonator and extracted a quasi-fundamental Gaussian mode from a pulsed Nd:YAG laser pumped by a Xenon flash lamp and measured its parameters, such as propagation factor, divergence angle, and Rayleigh range. Then we generated passive Bessel-Gauss beams using an axicon and investigated their propagation properties, theoretically and experimentally. For example, for the axicon of 1°, the output energy and the Rayleigh range of the generated Bessel-Gauss beams were measured to be 58 mJ and 229.3 mm, respectively. We compared these properties with our results of the Gaussian mode. Finally, by using axicons with different apex angles, and also by changing the beam spot size on the axicon, we generated Bessel-Gauss beams and studied their properties theoretically and experimentally.
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| http://dx.doi.org/10.1364/AO.51.007339 | DOI Listing |
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